Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 88 · 40 sums

The trick (Nikhilam Navatashcaramam Dashatah): Write how far each number is from the base (− if below, + if above). Left part: cross-add — one number plus the other’s difference. Right part: multiply the two differences; it must have as many digits as the base has zeros (carry the extra). One above and one below? The right part is negative: take 1 from the left part and write base − that amount.

1. 1.985 × 992 =
2. 2.103 × 87 =
3. 3.102 × 101 =
4. 4.9 × 9 =
5. 5.14 × 11 =
6. 6.1037 × 993 =
7. 7.1013 × 1025 =
8. 8.14 × 11 =
9. 9.90 × 91 =
10. 10.111 × 102 =
11. 11.86 × 87 =
12. 12.113 × 90 =
13. 13.7 × 6 =
14. 14.8 × 7 =
15. 15.94 × 87 =
16. 16.14 × 8 =
17. 17.7 × 6 =
18. 18.11 × 11 =
19. 19.97 × 91 =
20. 20.1028 × 1017 =
21. 21.99 × 96 =
22. 22.90 × 98 =
23. 23.109 × 88 =
24. 24.8 × 6 =
25. 25.11 × 7 =
26. 26.7 × 6 =
27. 27.91 × 92 =
28. 28.1005 × 967 =
29. 29.996 × 986 =
30. 30.1028 × 992 =
31. 31.109 × 106 =
32. 32.9 × 6 =
33. 33.85 × 92 =
34. 34.11 × 6 =
35. 35.92 × 93 =
36. 36.111 × 110 =
37. 37.8 × 8 =
38. 38.14 × 9 =
39. 39.111 × 102 =
40. 40.99 × 99 =

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